Originally Posted By hyefatman
Do not change anything. Your 383 2BBL Dual exhaust is just fine for that type of car. Do not trade reliability for performance. Nothing wrong with a 383 stock big block.


In my experience you can do both.

'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.